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Two lenses with focal lengths 10cm and 20cm and made of same material are placed coaxially separated by distance d. The value of d such that the system is achromatic is A) 20 om ) 30cm C) 10 cm D) 15 cm
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Two lenses with focal lengths 10cm and 20cm and made of same material are placed coaxially

separated by distance d. The value of d such that the system is achromatic is
A) 20 om
) 30cm
C) 10 cm
D) 15 cm​

User Ira Cooke
by
9.0k points

1 Answer

2 votes
if I’m not mistaken the answer is 30 cm
User Ignorant
by
7.5k points
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